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持续的基因流动表明,在非洲的物种化模型中,没有繁殖隔离

Xi Wang¹, Casper-Emil Tingskov Pedersen², Georgios Athanasiadis^1,3

¹Department of Biology, University of Copenhagen, Ole Maaløes Vej 5, 2200, Copenhagen N, Denmark.

Systematic biology

|August 14, 2024

概括

非洲鹿的辐射是由气候引起的,而不是强烈的繁殖隔离. 全基因组测序揭示了跨越障碍的基因流动,这表明像水这样的羊的晚期物种化.

科学领域:

进化生物学进化生物学
人口遗传学人口遗传学
基因组学就是基因组学.

背景情况:

非洲羊的多样性是普莱斯托时代巨型动物的独特遗迹,但它们辐射的进化驱动因素仍然不清楚.
水 (Kobus ellipsiprymnus) 作为一个模型,可能经历了物种化,不同的亚种表现出独特的特征.

研究的目的:

研究水子物种的遗传结构和种群分歧.
了解进化过程,包括代理和基因流动,塑造非洲鹿辐射.
确定与分歧相关的基因组区域,并评估它们在物种化中的作用.

主要方法:

来自两种亚种的145只水牛单体的全基因组测序.
对遗传结构,种群分歧和全基因组变异的分析.
推断历史基因流动模式和确定候选物种化区域.

主要成果:

在东部大裂谷的普世中期分离的证据,与牧师 (金顿线) 有关.
穿越裂谷屏障检测到普遍的历史和最近的基因流动.
确定了14个高分化的基因组区域,包括可能与毛皮色素相关的位置,但没有显示基因流量减少或混合不利因素.

结论:

气候驱动的维卡里安斯似乎是非洲鹿辐射的主要驱动因素.
生殖性隔离可能发生在分歧过程的晚期,导致许多羊种的分类学地位模两可.
使用低深度全基因组测序的种群遗传学为物种连续性提供了有价值的见解.

关键词:

添加剂混合物添加剂在水上,有水.差异化的岛屿.种类基因组学是物种的基因组学.水水水水是什么意思

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